PHYSICS LIKELY ANSWER
SURPRISE YOU TODAY!!
Physics obj
1-10 CEABCBAABB
11-20 DCCBCBCCAE
21-30 BECDDBEDDE
31-40 DBAEADBABA
41-50 CBDCBBBDCB
51-60 CEDDCBAEAA
*1a)*
i)Propellant
ii)Nozzle
*1aii)*
i)Used for communication
ii)Used to access geographical dispersed terrains and even topography
that characterise the nation's landscape
*1b)*
Given:
Object distance for eyepiece=3.0cm
Final image distance V =?
Focal length of eyepiece f=5.0cm
Using mirror / lens formular
1/f = 1/u + 1/v
1/5= 1/3 + 1/v
Multiplying through with 15v
3v = 5v + 15
3v - 5v = 15
-2v = 15
V = - 15/2
V= - 7.5cm
The final image is virtual and 7.5cm from the eyepiece on the same
side of the eyepiece as the object
_____________________________
*4a)*
The specific latent heat of vaporization of a substance is the
quantity of heat required to change a unit mass of the substance from
liquid to vapour without change of temperature
*4b)*
Kinetic energy is that possessed by a body due to its motion. While
potential energy is that possessed by a body due to its height or
state
__________________________
*5a)*
i) solar
ii) wind
*5b)*
Given:
M1=15kg, U1 =10m/s , V =?
M2 = 5kg, U2 =0 m/s
Using
M1V1 + M2V2 = V(M1 + M2)
15(10) + 5(0) V(15 + 5)
150 = 20V
==>20V = 150
V = 150 / 20
V= 7. 5m/s
Common velocity =7.5m/s
__________________________
*6a)*
A line or surface in the path of an advancing wave on which all
particles are vibrating in phase is called wave front
*6b)*
i)plane wavefront
ii)spherical or circular wavefront
____________________________
*7)*
*Pupil:* Regulate the amount of light entering the eye
Shutter:* Admits or shuts off light from the film of the camera
*Screen:* Used to focus light from a near object in front of the pinhole camera
_____________________________
*9a)*
i) Over charging(for secondary cell) ii)self discharge (for primary cell)
*9b)*
Self discharge:A primary cell lose a considerable percentage of their
charge when stored at room temperature. This is due to non-current
producing "side" chemical reaction that occur within the cell even
when no load is applied
_________________________-
*10)*
i)Fusion is more easily achieved with lightest elements such as hydrogen
ii) The raw materials required for fusion are more cheaply and readily available
iii) Fusion process produce less dangerous by-products
*13ai)*
i)Used for heating / evaporating water in Salt industries
ii)Used in solar panel for electrification
*13aii)*
Renewable energy is that produced from energy source which can be
replenished. Non Renewable energy is not replenished enchants upon us
*13b)*
In a jet, gases are burnt within the combustion Chambers of the
engine. As jets of hot gas expelled backwards through tails nozzles at
very high speed. An equal and opposite momentum is given to the jet
which then move it forward
*13c)*
Given:
Mass m, =0.2kg
Heat lost it = 4200J
Initial temperature θi= 100°c
Final temperature θf =?
Salt C of water, Cw = 4200j/kg/k
Using
Heat lost Mw Cw (θi - θf)
4200 = 0.2×4200 × ( 100 - θf)
(100 - θi) = 4200 / 0.2× 4200
100 - θf = 5
100 - 5 = θf
===>θf =100 - 5
θf =95°c
Final temperature = 95°c
*15a)*
Coulomb's law state that magnitude of the electrostatic force of
attraction between two point charges is directly proportional to the
product of the magnitudes of the charges and inversely proportional to
the square of the distance between them
*15bi)*
Diagram(will sent as image)
*15bii)*
Let equivalent resistance be R
1/R = 1/R1 + 1/R2 + 1/R3
I/R = R2R3 + R1R3 + R1R2 / R1R2R3
R= R1R2R3 / R1R2+R2R3+R1R3
*15c)*
GIVEN!
200Ω C =4mf f=50h2 π =3.14
Impedance Z =√R^2 + (1/2Ω + c) ^2
Z =√200^2 + (1/2×3.145×50×4×10^-6)^2
Z=√200^2 + 796.178^2
Z=√40000 + 633900
Z=√673900
Z=821Ω
Physics obj
1-10 CEABCBAABB
11-20 DCCBCBCCAE
21-30 BECDDBEDDE
31-40 DBAEADBABA
41-50 CBDCBBBDCB
51-60 CEDDCBAEAA
*1a)*
i)Propellant
ii)Nozzle
*1aii)*
i)Used for communication
ii)Used to access geographical dispersed terrains and even topography
that characterise the nation's landscape
*1b)*
Given:
Object distance for eyepiece=3.0cm
Final image distance V =?
Focal length of eyepiece f=5.0cm
Using mirror / lens formular
1/f = 1/u + 1/v
1/5= 1/3 + 1/v
Multiplying through with 15v
3v = 5v + 15
3v - 5v = 15
-2v = 15
V = - 15/2
V= - 7.5cm
The final image is virtual and 7.5cm from the eyepiece on the same
side of the eyepiece as the object
_____________________________
*4a)*
The specific latent heat of vaporization of a substance is the
quantity of heat required to change a unit mass of the substance from
liquid to vapour without change of temperature
*4b)*
Kinetic energy is that possessed by a body due to its motion. While
potential energy is that possessed by a body due to its height or
state
__________________________
*5a)*
i) solar
ii) wind
*5b)*
Given:
M1=15kg, U1 =10m/s , V =?
M2 = 5kg, U2 =0 m/s
Using
M1V1 + M2V2 = V(M1 + M2)
15(10) + 5(0) V(15 + 5)
150 = 20V
==>20V = 150
V = 150 / 20
V= 7. 5m/s
Common velocity =7.5m/s
__________________________
*6a)*
A line or surface in the path of an advancing wave on which all
particles are vibrating in phase is called wave front
*6b)*
i)plane wavefront
ii)spherical or circular wavefront
____________________________
*7)*
*Pupil:* Regulate the amount of light entering the eye
Shutter:* Admits or shuts off light from the film of the camera
*Screen:* Used to focus light from a near object in front of the pinhole camera
_____________________________
*9a)*
i) Over charging(for secondary cell) ii)self discharge (for primary cell)
*9b)*
Self discharge:A primary cell lose a considerable percentage of their
charge when stored at room temperature. This is due to non-current
producing "side" chemical reaction that occur within the cell even
when no load is applied
_________________________-
*10)*
i)Fusion is more easily achieved with lightest elements such as hydrogen
ii) The raw materials required for fusion are more cheaply and readily available
iii) Fusion process produce less dangerous by-products
*13ai)*
i)Used for heating / evaporating water in Salt industries
ii)Used in solar panel for electrification
*13aii)*
Renewable energy is that produced from energy source which can be
replenished. Non Renewable energy is not replenished enchants upon us
*13b)*
In a jet, gases are burnt within the combustion Chambers of the
engine. As jets of hot gas expelled backwards through tails nozzles at
very high speed. An equal and opposite momentum is given to the jet
which then move it forward
*13c)*
Given:
Mass m, =0.2kg
Heat lost it = 4200J
Initial temperature θi= 100°c
Final temperature θf =?
Salt C of water, Cw = 4200j/kg/k
Using
Heat lost Mw Cw (θi - θf)
4200 = 0.2×4200 × ( 100 - θf)
(100 - θi) = 4200 / 0.2× 4200
100 - θf = 5
100 - 5 = θf
===>θf =100 - 5
θf =95°c
Final temperature = 95°c
*15a)*
Coulomb's law state that magnitude of the electrostatic force of
attraction between two point charges is directly proportional to the
product of the magnitudes of the charges and inversely proportional to
the square of the distance between them
*15bi)*
Diagram(will sent as image)
*15bii)*
Let equivalent resistance be R
1/R = 1/R1 + 1/R2 + 1/R3
I/R = R2R3 + R1R3 + R1R2 / R1R2R3
R= R1R2R3 / R1R2+R2R3+R1R3
*15c)*
GIVEN!
200Ω C =4mf f=50h2 π =3.14
Impedance Z =√R^2 + (1/2Ω + c) ^2
Z =√200^2 + (1/2×3.145×50×4×10^-6)^2
Z=√200^2 + 796.178^2
Z=√40000 + 633900
Z=√673900
Z=821Ω
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